# Heron’s Formula MCQ Questions for Class 9 Math’s Chapter 12 with Answers

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(A) k
(B) 3k
(C) 4k
(D) 2k

(A) 25 cm
(B) 15 cm
(C) 20 cm
(D) 50 cm

(A) 25 cm
(B) 15 cm
(C) 20 cm
(D) 50 cm

(A) 20√11 cm²
(B) 19√11 cm²
(C) 22√11 cm²
(D) 21√11 cm²

(A) Rs 2.00
(B) Rs 2.16
(C) Rs 2.48
(D) Rs 3.00

(A) 10√3 m²
(B) 15√3 m²
(C) 20√3 m²
(D) 100√3 m²

(A) 43.3 cm²
(B) 43.1 cm²
(C) 43.4 cm²
(D) 43.2 cm²

(A) 20 cm²
(B) 18 cm²
(C) 80 cm²
(D) 40 cm²

## Q9. If side of a scalene △ is doubled then area would be increased by

(A) 100 %
(B) 50 %
(C) 25 %
(D) None of these

(A) √16 cm
(B) √48 cm
(C) √32 cm
(D) √24 cm

(A) ₹320
(B) ₹350
(C) ₹340
(D) ₹160

(A) Smallest
(B) Largest
(C) No relation
(D) None

(A) 48 cm
(B) 24 cm
(C) 12 cm
(D) 36 cm

(A) 2/27 cm²
(B) 2/15 cm²
(C) 3/16 cm²
(D) 3/14 cm²

## Q15. The edges of a triangular board are 6 cm, 8 cm and 10 cm. The cost of painting it at the rate of 70 paise per cm2 is

(A) ₹17
(B) ₹16.80
(C) ₹7
(D) ₹16

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